Initial rainwater intercepting well capable of being automatically opened and closed

Abstract

The utility model relates to an initial rainwater intercepting well capable of being automatically opened and closed. The initial rainwater intercepting well comprises a V-shaped lever assembly, a sewage intercepting assembly, a rainwater discharging assembly, an intercepting well inner wall and a water inlet pipe, wherein the V-shaped lever assembly comprises a V-shaped lever, a pulley, a soft rope and a pin shaft; the sewage intercepting assembly comprises a sewage intercepting pipe, a sewage intercepting flashboard and a first U-shaped rail; the rainwater drainage assembly comprises a rainwater pipe, a rainwater flashboard and a second U-shaped rail; wherein the V-shaped lever is movably connected to the inner wall of the intercepting well through the pin shaft, and the two ends of the V-shaped lever are fixedly connected with the rainwater flashboard and the sewage intercepting flashboard through the soft ropes respectively; the automatic control device has the advantages that the V-shaped lever structure arranged in the intercepting well and the gravity and buoyancy action borne by the flashboards of the sewage intercepting pipe opening and the rainwater pipe opening in different water immersion states are utilized, so that automatic control over the flashboards in the intercepting well is achieved, and the automatic control device has the advantages of being simple in structure, low in cost and small in maintenance amount.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental protection equipment and relates to a rainwater interception device, in particular to an automatically opened and closed initial rainwater interception well. Background Art

[0002] With the rapid advancement of urbanization and the rapid development of the economy in my country, new urban rainwater and sewage pipe systems are required to adopt the form of rainwater and sewage diversion system, and the early built rainwater and sewage combined pipe network system is also gradually transformed into a rainwater and sewage diversion pipe network system, so that it can continuously reduce the amount of pollutants flowing into the water environment and improve the quality of the water environment. However, in daily life, due to the presence of certain pollutants in the atmosphere and the ground surface, and the incomplete transformation of the diversion system or the mixed connection and wrong connection under the diversion system, these dry flow sewage on sunny days and the initial polluted rainwater generated at the beginning of rainfall often carry most of the pollutants in the entire rainfall cycle and discharge them into the water body, causing non-point source pollution to the water body. Therefore, the initial rainwater needs to be properly collected and incorporated into the sewage pipe network system or collected and purified before being discharged into the natural water body.

[0003] Initial rainwater is polluted runoff in the catchment area at the beginning of rainfall. It generally refers to the relatively serious surface polluted runoff formed by the initial rainfall of 10-15 minutes or 2-5mm in the catchment area. At present, interception wells are generally set up to intercept initial rainwater. Traditional interception wells generally use overflow weir wells or jump wells to intercept the initial rainwater of dry flow sewage. However, with the increase of rainwater volume or the increase of water level in the interception well, there will be a large increase in the amount of sewage intercepted by the interception pipe; and in this process, some mid- and late-stage rainwater with better water quality will also enter the sewage system, causing a significant increase in the water load of the sewage treatment plant (or sewage treatment station) system and fluctuations in water quality, affecting the effect of the treatment system on sewage treatment. In severe cases, it may even exceed the carrying capacity of the sewage system; causing these sewage volumes that exceed the capacity of the treatment system to directly enter the water body, polluting it again, thereby reducing the effectiveness of the sewage interception system. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art, and in particular provides an initial rainwater interception well which can be opened and closed automatically.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An automatically opened and closed initial rainwater interception well, the interception well comprising a V-shaped lever assembly, a sewage interception assembly, a rainwater discharge assembly, an inner wall of the interception well and a water inlet pipe; the V-shaped lever assembly comprises a V-shaped lever, a pulley, a soft cable and a pin shaft, wherein the V-shaped lever is movably connected to the inner wall of the interception well through the pin shaft, and the soft cable is respectively connected to both ends of the V-shaped lever; wherein the sewage interception assembly and the rainwater discharge assembly are also respectively connected to the soft cable;

[0007] The sewage interception assembly includes a sewage interception pipe, a sewage interception gate and a first U-shaped track, wherein the sewage interception pipe is arranged on the inner wall of the interception well, and a sewage interception gate is arranged at the pipe mouth of the sewage interception pipe, wherein the V-shaped lever is fixedly connected to the sewage interception gate through the soft cable; the first U-shaped track is vertically arranged on the inner wall of the interception well and connected to the pipe mouth of the sewage interception pipe, and the sewage interception gate can move up and down in the first U-shaped track;

[0008] The rainwater discharge assembly includes a rainwater pipe, a rainwater gate and a second U-shaped track, wherein the rainwater gate is arranged on the inner wall of the intercepting well, and the rainwater gate is arranged at the pipe mouth of the rainwater pipe, wherein the V-shaped lever is fixedly connected to the rainwater gate through the soft cable; the second U-shaped track is vertically arranged on the inner wall of the intercepting well and connected to the pipe mouth of the rainwater pipe, and the rainwater gate can move up and down in the second U-shaped track; and a water inlet pipe is also arranged on the inner wall of the intercepting well.

[0009] Preferably, the V-shaped lever comprises the pin fixed on the inner wall of the intercepting well and two rotating rods of different lengths; wherein the two rotating rods are integrally connected and can rotate on the inner wall of the intercepting well through the pin.

[0010] Preferably, the lengths of the two rotating rods and the angle therebetween can be determined according to the size of the intercepting well, the pipe diameter of the sewage interception pipe and the pipe diameter of the rainwater pipe.

[0011] Preferably, the soft cables at both ends of the V-shaped lever are also connected to pulleys, wherein the pulleys are respectively fixed to the inner wall of the intercepting well through the pin shafts, and the rainwater gate plate and the sewage intercepting gate plate can be moved up and down in cooperation with the soft cables through the pulleys.

[0012] Preferably, the bottom elevations of the sewage interception pipe and the rainwater pipe in the intercepting well are consistent. Under the restriction of the U-shaped track, the sewage interception gate plate and the rainwater gate plate will move up and down along the U-shaped track, presenting an open state and a closed state with the sewage interception pipe and the rainwater pipe respectively.

[0013] Preferably, the opening liquid level of the rainwater gate is the top elevation of the sewage interception pipe; wherein, when the liquid level of the sewage interception pipe exceeds the liquid level of the rainwater gate, the rainwater gate moves upward to open the rainwater pipe, and the sewage interception gate moves downward to close the sewage interception pipe.

[0014] Preferably, the weight of the sewage interception gate is less than that of the rainwater gate, and when the water level of the interception well reaches the pipe top elevation water level of the sewage interception pipe, the sewage interception gate and the rainwater gate under the action of buoyancy reach force balance.

[0015] Preferably, the intercepting well is square or circular in shape.

[0016] Preferably, the rainwater gate plate is a hollow gate plate, and a "well"-shaped reinforcement rib is arranged in the hollow interior thereof.

[0017] Due to the adoption of the above technical solution, the beneficial effects obtained by the utility model include:

[0018] 1. The utility model realizes automatic control of the gate in the interception well mainly based on gravity and V-shaped lever structure during the rainwater and sewage separation process, and has the characteristics of simple structure, low cost and less maintenance;

[0019] 2. Compared with the traditional interception wells in the form of overflow weir wells and jump wells, the utility model can completely close the sewage interception pipe to prevent a large amount of clean mid- and late-stage rainwater from flowing into the sewage interception pipe;

[0020] 3. Compared with the current sewage interception wells which require the installation of mechanical equipment such as submersible sewage pumps, the utility model does not require any power and does not require a high-open and low-stop control mode. During this period, the lever principle can be used to automatically complete the opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 The utility model is a schematic diagram of the plan layout of an embodiment of an initial rainwater interception well with automatic opening and closing.

[0022] Attached Figure 2 The utility model is a schematic diagram of an embodiment of an initial rainwater interception well that automatically opens and closes, in which the initial rainwater is completely collected at the initial stage of rainfall.

[0023] Attached Figure 3 It is a schematic diagram of the state of completely closing the initial rainwater discharge pipe in the middle and late stages of rainfall in one embodiment of the utility model for automatically opening and closing the initial rainwater interception well.

[0024] Reference numerals;

[0025] 1. V-shaped lever assembly; 11. V-shaped lever; 12. pulley;

[0026] 13. Soft rope; 14. Pin; 15. Rotating rod;

[0027] 2. Sewage interception assembly; 21. Sewage interception pipe; 22. Sewage interception gate; 23. First U-shaped track;

[0028] 3. Rainwater discharge assembly; 31. Rainwater pipe; 32. Rainwater gate; 33. Second U-shaped track;

[0029] 4. Inner wall of intercepting well; 5. Water inlet pipe. DETAILED DESCRIPTION

[0030] In order to more clearly demonstrate the technical content of the present invention, it is further described below in conjunction with specific embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model mainly provides an automatically opened and closed initial rainwater interception well, including a V-shaped lever assembly 1, a sewage interception assembly 2, a rainwater discharge assembly 3, an inner wall 4 of the interception well and a water inlet pipe 5; wherein, the V-shaped lever assembly 1 includes a V-shaped lever 11, a pulley 12, a soft cable 13 and a pin 14, wherein the V-shaped lever 1 is movably connected to the inner wall 4 of the interception well through the pin 14, and the soft cable 13 is respectively connected to both ends of the V-shaped lever 1; and in this embodiment, the V-shaped lever 1 includes a pin 14 fixed to the inner wall of the interception well and two rotating rods 15 of different lengths; wherein, the two rotating rods 15 are integrally connected and can rotate on the inner wall 4 of the interception well through the pin 14. Pulleys 12 are also respectively connected to the soft cables 13 at both ends of the V-shaped lever 1, and the two ends of the soft cables 13 are respectively wound around the pulleys 12; wherein, the pulleys 12 at both ends are respectively fixed to the inner wall 4 of the interception well through the pin 14;

[0032] Among them, the sewage interception component 2 includes a sewage interception pipe 21, a sewage interception gate plate 22 and a first U-shaped track 23; the sewage interception pipe 21 is arranged on the inner wall 4 of the interception well, and a sewage interception gate plate 22 is arranged at the pipe mouth of the sewage interception pipe 21, wherein the V-shaped bar 11 is fixedly connected to the sewage interception gate plate 22 through a soft cable 13; the first U-shaped track 23 is vertically arranged on the inner wall 4 of the interception well and is connected to the pipe mouth of the sewage interception pipe 21, and the sewage interception gate plate 22 can cooperate with the pulley 12 and the soft cable 13 under the action of gravity and move up and down in the first U-shaped track 23; under the restriction of the first U-shaped track 23, the sewage interception gate plate 22 will move up and down along the first U-shaped track 23, and present an open state and a closed state with the pipe mouth of the sewage interception pipe 21, thereby realizing the opening and closing of the sewage interception pipe 21 in the interception well.

[0033] The rainwater discharge assembly 3 includes a rainwater pipe 31, a rainwater gate 32 and a second U-shaped track 33, wherein the rainwater gate 32 is arranged on the inner wall 4 of the intercepting well, and the rainwater gate 32 is arranged at the pipe mouth of the rainwater pipe 31, wherein the V-shaped lever 11 is fixedly connected to the rainwater gate 32 through a soft cable 13; the second U-shaped track 33 is vertically arranged on the inner wall 4 of the intercepting well, and is connected to the pipe mouth of the rainwater pipe 31, and the rainwater gate 32 can cooperate with the pulley 12 and the soft cable 13 under the action of gravity and move up and down in the second U-shaped track 33; under the restriction of the second U-shaped track 33, the rainwater gate 32 will move up and down along the second U-shaped track 33, and present an open state and a closed state with the pipe mouth of the rainwater pipe 31, so as to realize the opening and closing of the rainwater pipe 31 in the intercepting well. In this embodiment, a water inlet pipe 5 is also arranged on the inner wall 4 of the intercepting well.

[0034] In this embodiment, the length of the two rotating rods 15 and the angle between them can be determined according to the size of the intercepting well, the position of the sewage interception pipe 21 and the rainwater pipe 31, and the pipe diameters of the sewage interception pipe 21 and the rainwater pipe 31, so as to ensure that the sewage interception gate plate 22 and the rainwater gate plate 32 are located slightly higher than the top elevation of the two discharge pipes (sewage interception pipe and rainwater pipe) when the sewage interception pipe 21 and the rainwater pipe 31 are fully opened, respectively. That is, the opening liquid level of the rainwater gate plate 32 is the pipe top elevation of the sewage interception pipe 21. When the liquid level of the sewage interception pipe 21 exceeds this liquid level, the rainwater gate plate 32 moves upward and opens the rainwater pipe 31, and the sewage interception gate plate 22 moves downward to close the sewage interception pipe 21;

[0035] At the same time, when facing the water level height in different interception wells, the lifting height of the sewage interception gate plate 22 and the rainwater gate plate 32 is also different, and the corresponding lifting to the highest elevation corresponds to the pipe top elevation of the sewage interception pipe 21 and the rainwater pipe 31. That is, when one gate plate is in the highest position, the other gate plate is in the lowest position, and the corresponding discharge pipes (sewage interception pipe and rainwater pipe) are in the fully open and fully closed states respectively. In addition, in this embodiment, the bottom elevations of the sewage interception pipe 21 and the rainwater pipe 31 in the interception well are set to be consistent, so as to ensure that no rainwater accumulates in the interception well after the rainfall ends. At the same time, the pipe diameter of the sewage interception pipe 21 can be determined according to the gravity pipe hydraulic calculation; when there is no measured data, the design flow of the sewage interception pipe 21 can be determined according to 2-5 times the amount of sewage in the local rainwater pipe network on sunny days, that is, the interception multiple, and its value depends on the surface water quality protection requirements and the local environmental protection department. The diameter of the rainwater pipe 31 is determined according to the local recurrence period rainwater flow rate, and the diameter of the sewage interception pipe 21 is generally smaller than the diameter of the rainwater pipe 31 .

[0036] In this embodiment, the weight of the sewage interception gate 22 is less than the weight of the rainwater gate 32. When the water level in the interception well reaches the pipe top elevation water level of the sewage interception pipe 21, the sewage interception gate 22 and the rainwater gate 32 under the action of buoyancy reach a force balance; as the water level in the interception well continues to rise, the rainwater gate 32 will slowly move upward under the action of gravity and lever until the rainwater pipe 31 is fully opened. Therefore, when the water level in the interception well is low, all the initial rainwater can be discharged from the sewage interception pipe into the initial rainwater collection unit, and then as the water level in the interception well continues to rise, the sewage interception gate 22 will gradually close the sewage interception pipe 21; at the same time, the corresponding rainwater gate 32 will gradually open the rainwater pipe 31 until the sewage interception gate 22 completely closes the sewage interception pipe 21, at which time, the corresponding rainwater gate 32 will fully open the rainwater pipe 31.

[0037] In this embodiment, the intercepting well may be square or circular in shape, and the positions of the sewage intercepting pipe 21 and the rainwater pipe 31 may be arranged according to actual conditions, and may be parallel or angled.

[0038] In this embodiment, the material of the V-shaped lever 11 can be a corrosion-resistant, high-strength and rigid material, preferably SUS304 or stainless steel products with better performance; the sewage interception gate plate 22 is preferably made of solid metal with a heavier specific gravity and meeting the strength requirements, such as stainless steel or cast iron gate plates. The rainwater gate plate 32 is preferably a hollow gate plate made of lightweight, anti-aging, corrosion-resistant, wear-resistant and high-strength UHMWPE plastic, and a "well"-shaped reinforcement rib is preferably provided inside the hollow.

[0039] The water distribution in the initial rainwater interception well of the utility model is divided into three states:

[0040] 1. The water level in the interception well is between the low water level and the top elevation of the sewage interception pipe: all water entering the interception well is discharged from the sewage interception pipe, and the rainwater pipe is completely closed. At this time, the sewage interception gate is at the highest position, and the rainwater gate is at the lowest position;

[0041] 2. The water level in the interception well is higher than the top elevation of the sewage interception pipe, but the sewage interception pipe is not completely closed: when the water level reaches the top elevation of the sewage interception pipe, the sewage interception gate and the rainwater gate under the buoyancy reach a force balance; and as the water level exceeds the top elevation of the sewage interception pipe, the buoyancy of the rainwater gate will become greater and greater, while the sewage interception gate will continue to drop and gradually close the sewage interception pipe; at this time, the incoming water is discharged from the sewage interception pipe and the rainwater pipe respectively, and the discharge volume is related to the liquid level in the interception well;

[0042] 3. The sewage interception pipe in the interception well is completely closed: all water entering the interception well is discharged through the rainwater pipe.

[0043] In summary, when there is no rainfall or the rainfall is small, the interception well is in the sewage pipe open state. When the rainfall is large and lasts for a long time, the states experienced by the interception well are respectively the sewage pipe open state - the sewage pipe and the rainwater pipe are open at the same time - the sewage pipe is closed and the rainwater pipe is open.

[0044] It should be noted that: in the process of rainwater and sewage separation, the utility model mainly relies on gravity and V-shaped lever structure to realize automatic control of the gate in the interception well, and has the characteristics of simple structure, low cost and low maintenance; compared with traditional interception wells in the form of overflow weir wells and jump wells, it can completely close the sewage interception pipe to prevent a large amount of clean mid- and late-stage rainwater from flowing into the sewage interception pipe; compared with the current sewage interception wells that require mechanical equipment such as submersible sewage pumps, it does not require any power and does not require a high-open and low-stop control mode, and can automatically open and close by using the lever principle.

[0045] The above-mentioned related explanations and descriptions of the embodiments are for the convenience of ordinary technicians in the technical field to understand and apply the utility model. It is obvious that those familiar with the technology in the field can easily make various modifications to these contents and apply the general principles described here to other embodiments without creative work. Therefore, the utility model is not limited to the above-mentioned related explanations and descriptions of the embodiments. Improvements and modifications made by technicians in the field based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. An automatically opened and closed initial rainwater interception well, characterized in that: The interception well comprises a V-shaped lever assembly, a sewage interception assembly, a rainwater discharge assembly, an inner wall of the interception well and a water inlet pipe; The V-shaped lever assembly comprises a V-shaped lever, a pulley, a soft cable and a pin shaft, wherein the V-shaped lever is movably connected to the inner wall of the interception well through the pin shaft, and the soft cables are respectively connected to both ends of the V-shaped lever; wherein the soft cables are also respectively connected to the sewage interception assembly and the rainwater discharge assembly; The sewage interception assembly includes a sewage interception pipe, a sewage interception gate and a first U-shaped track, wherein the sewage interception pipe is arranged on the inner wall of the interception well, and a sewage interception gate is arranged at the pipe mouth of the sewage interception pipe, wherein the V-shaped lever is fixedly connected to the sewage interception gate through the soft cable; the first U-shaped track is vertically arranged on the inner wall of the interception well and connected to the pipe mouth of the sewage interception pipe, and the sewage interception gate can move up and down in the first U-shaped track; The rainwater discharge assembly includes a rainwater pipe, a rainwater gate and a second U-shaped track, wherein the rainwater gate is arranged on the inner wall of the interception well, and the rainwater gate is arranged at the pipe mouth of the rainwater pipe, wherein the V-shaped lever is fixedly connected to the rainwater gate through the soft cable; the second U-shaped track is vertically arranged on the inner wall of the interception well and connected to the pipe mouth of the rainwater pipe, and the rainwater gate can move up and down in the second U-shaped track; A water inlet pipe is also arranged on the inner wall of the intercepting well.

2. The automatically opened and closed initial rainwater interception well according to claim 1 is characterized in that: The V-shaped lever comprises the pin shaft fixed on the inner wall of the intercepting well and two rotating rods of different lengths; wherein the two rotating rods are connected in one piece and can rotate on the inner wall of the intercepting well through the pin shaft.

3. The automatically opened and closed initial rainwater interception well according to claim 2 is characterized in that: The lengths of the two rotating rods and the angle therebetween can be determined according to the size of the intercepting well, the pipe diameter of the sewage intercepting pipe and the pipe diameter of the rainwater pipe.

4. The automatically opened and closed initial rainwater interception well according to claim 1 is characterized in that: The soft cables at both ends of the V-shaped lever are also connected with pulleys, wherein the pulleys are fixed to the inner wall of the intercepting well through the pin shafts, and the rainwater gate plate and the sewage intercepting gate plate can be moved up and down in cooperation with the soft cables through the pulleys.

5. The automatically opened and closed initial rainwater interception well according to claim 1 is characterized in that: The bottom elevations of the sewage interception pipe and the rainwater pipe in the intercepting well are consistent. Under the restriction of the U-shaped track, the sewage interception gate plate and the rainwater gate plate will move up and down along the U-shaped track, presenting an open state and a closed state with the sewage interception pipe and the rainwater pipe respectively.

6. The automatically opened and closed initial rainwater interception well according to claim 1 is characterized in that: The opening liquid level of the rainwater gate is the elevation of the top of the sewage interception pipe; when the liquid level of the sewage interception pipe exceeds the liquid level of the rainwater gate, the rainwater gate moves upward to open the rainwater pipe, and the sewage interception gate moves downward to close the sewage interception pipe.

7. The automatically opened and closed initial rainwater interception well according to claim 1 is characterized in that: The weight of the sewage interception gate plate is less than that of the rainwater gate plate. When the water level of the interception well reaches the pipe top elevation water level of the sewage interception pipe, the sewage interception gate plate and the rainwater gate plate under the action of buoyancy reach force balance.

8. The automatically opened and closed initial rainwater interception well according to claim 1 is characterized in that: The intercepting well may be in the shape of a square or a circle.

9. The automatically opened and closed initial rainwater interception well according to claim 1, characterized in that: The rainwater gate plate is a hollow gate plate, and a "well"-shaped reinforcement rib is arranged in the hollow interior thereof.

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